Flight number record
UA 1164
United Airlines · San Francisco to Los Angeles
- Route
- SFO → LAX
- Departs
- 10:35
- Flights
- 275
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s UA 1164, check with United Airlines.
UA 1164 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land roughly 45 minutes behind schedule. That rests on 275 flights, with a median arrival 1 minute late.
Key figures
On time
73.7%
Arrivals under 15 minutes late, of 274 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.36%
National rate is 1.89%
1 hour+ late
4.7%
National rate is 8.3%
These figures cover 275 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Schedule
When UA 1164 flies
UA 1164 flies SFO to LAX without a single fixed slot. Its most common scheduled departure was 10:35, used on 64 of 275 flights, with 10:52 (50 flights) and 10:50 (44 flights) next.
- Departs 10:3564 flights23.3%
- Departs 10:5250 flights18.2%
- Departs 10:5044 flights16.0%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 10:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and UA 1164 runs 10 points worse at 73.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
UA 1164 next to SFO to LAX
Every carrier on SFO to LAX combined arrived on time 70.9% of the time across 11,437 flights, so UA 1164 is 3 points ahead of it. United flew 3,335 flights on the same city pair under all its flight numbers, including this one, and those ran 77.7% on time. Across its whole network United Airlines managed 78.8%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| UA 1164thin sample | 275 | 73.7% | 43 min | 0.36% | C+ |
| All United Airlines on SFO–LAX | 3,335 | 77.7% | 46 min | 0.15% | B+ |
| All carriers on SFO–LAX | 11,437 | 70.9% | 58 min | 0.82% | C+ |
| United Airlines, whole network | 830,825 | 78.8% | 73 min | 1.02% | B |
Across the year
UA 1164 quarter by quarter
UA 1164 did not run the same all year. Its best quarter was Jan–Mar 2026 at 78.9% on time and its weakest Oct–Dec 2025 at 65.5%, a swing of 13 points on roughly 92 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights—
- Oct–Dec 202587 flights65.5%
- Jan–Mar 202690 flights78.9%
- Apr–Jun 202647 flights78.7%
- Jul–Sep 202621 flights—
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, UA 1164 did best on Monday at 80.5% on time and worst on Friday at 67.5%. Each day rests on about 39 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late UA 1164 runs when it is late
Most of the lateness is short. 38 of the 72 late arrivals were under half an hour behind, and 13 reached an hour or more.
- 15+ min early31 flights11.3%
- Within 15 min171 flights62.4%
- 15–29 min late38 flights13.9%
- 30–59 min late21 flights7.7%
- 1–2 hours late8 flights2.9%
- 2+ hours late5 flights1.8%
Scale runs 0% to 100%.
Share of 274 completed flights by arrival against schedule.
10 of 53 late departures made up the time and arrived on time, 19% of them. In the other direction, 29 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at LAX.
The worst days
Worst days for UA 1164
The latest arrival of the period was on 8 November 2025, 3 hours 12 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 8 November 2025 | 3 hours 12 minutes | Late-arriving aircraft |
| 7 December 2025 | 2 hours 54 minutes | Late-arriving aircraft |
| 6 December 2025 | 2 hours 47 minutes | Carrier |
| 17 February 2026 | 2 hours 41 minutes | National Airspace System |
| 14 September 2025 | 2 hours 31 minutes | Late-arriving aircraft |
Delay causes
Why UA 1164 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,127 reported delay minutes.
- 39%Late-arriving aircraft
- 34%National Airspace System
- 27%Carrier
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,127 reported delay minutes here, that single category outweighs weather by 39 to one. The split is drawn from 3,127 delay minutes reported on UA 1164.
Cancellations are rare at 0.36%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on four other city pairs in the data, including PDX to SFO (83), LAX to EWR (19) and LAX to IAD (18), but none flew often enough under UA 1164 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to LAX only.
One caution: this is a thin sample. 275 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking UA 1164
For a booking, read UA 1164 as 73.7% on time with 0.36% cancelled over 275 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SFO to LAX, every carrier and departure
- LAX to SFO, the return direction
- Delta Air Lines 1598 on the same route93.4%
- Delta Air Lines 1421 on the same route89.7%
- Delta Air Lines 2267 on the same route49.2%
- United Airlines 2179 on the same route68.5%
- United Airlines 1754 on the same route71.8%
- Delta Air Lines 1715 on the same route56.1%
- San Francisco International (SFO) delay statistics
- Los Angeles International (LAX) delay statistics
- United Airlines on-time record
- Every United Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means United Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.